a room is 7cm long and 7cm wide and 3.5 my high . find the cost of covering it's walls by a paper of 50cm wide at the rate of rupee the. 50 per metre.
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hey
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papering is done on all the four walls and and on the top of the wall too except the base part that is papering is not done on ground surface so we will find area of 5 walls
3.5 m ,700m,700m
area of 4 walls + area of top wall
2(l+b)×h +l×b
2(700+700)×3.5+700×700
= 1400×2×3.5+4900
=9800+4900
=14700m^2
1m^2 costs ₹50
14700m^2 costs ₹50×14700 = ₹735000
hope helped
_______________
_________________
papering is done on all the four walls and and on the top of the wall too except the base part that is papering is not done on ground surface so we will find area of 5 walls
3.5 m ,700m,700m
area of 4 walls + area of top wall
2(l+b)×h +l×b
2(700+700)×3.5+700×700
= 1400×2×3.5+4900
=9800+4900
=14700m^2
1m^2 costs ₹50
14700m^2 costs ₹50×14700 = ₹735000
hope helped
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